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  Developed a more complete understanding of structure of atoms.
 Charged particles
 Atoms were made of space.
 Called the center of a element was called the nucleus
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  Proposed that electrons orbit around the nucleus.
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  Evaluated patent applications for electromagnetic devices.
 Einstein deduced the well-known equation E=mc2, suggesting that tiny particles of matter could be converted into huge amounts of energy, foreshadowing the development of nuclear power.
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  The elements must be made with smaller matter.
 Ultimate Particles
 Atomic theory
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  Quantum mechanics.Discovery of allotropic forms of hydrogen.
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  Stated that atoms were simple solid spheres.
 He discovered electrons.
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  Fundamental discovery in the domain of nuclear science: he proved the existence of neutrons.
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  Got worldwide acclaim for the groundbreaking work on quantum theory.Suggested in his thesis for a doctorate degree that matter.